Greenhouse Gas Emissions and Global Warming

Greenhouse gases are normally occurring gases that allow life to exist on Planet Earth. They keep the planet warm enough for life to thrive by trapping some of the suns warming rays inside our atmosphere. However, unnaturally high levels of greenhouse gasses resulting from the burning of fossil fuels can warm the planet to unhealthy temperatures which affects all life on Planet Earth.


Antioch began its commitment to combating climate change in 2007 when the city joined ICLEI, an international collective of local governments dedicated to sustainability. Antioch began the 5 step process seen in the diagram to the left, and has since made some major progress on reaching the statewide reduction goals required by Assembly Bill 32.

Antioch has completed GHG inventories for the years 2005, 2010, and 2015, and the City Council approved these inventories on September 13, 2016. The staff report for this City Council meeting can be found here.

  • 2007: Antioch joins ICLEI (Resolution 2007/69)
  • 2009: Antioch establishes greenhouse gas reduction targets and adopts its 2005 GHG inventory
        (Resolution 2009/57)
  • 2011: Antioch adopts Municipal and Community Climate Action Plans (Resolution 2011/39)
  • 2015-2016: Antioch completes 2010 and 2015 community and municipal greenhouse gas
         inventories (Links to community and municipal plans)

In accordance with statewide GHG reduction goals, Antioch currently has targets to reduce overall carbon emissions by 25% by 2020, 40% by 2030, and 80% by 2050, based on 1990 levels.

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With the 2010 and 2015 inventories and the Municipal and Community Climate Action Plans completed, Antioch can now begin to accurately monitor the ways it has been successful in reducing emissions. With the help of the programs listed below, as well as the energy efficiency partnerships with PACE listed here, Antioch has already succeeded in substantially reducing its yearly emissions output to about 12% less than 2005 and 2010 levels. With the help of these programs, and the community's engagement and participation with them, Antioch is optimistic it will reach the statewide emissions reduction target for 2020. Check the programs listed here and on the PACE page to find what the city is doing to achieve these reductions and learn how you can lower your own emissions and help Antioch reach these targets!

In addition to the measures outlined in the Climate Action Plans, below you will find more information on what the city is doing to reduce municipal operations related emissions, and to assist our businesses and residents.

Spare the Air Resource Team

As a member of the Contra Costa Spare the Air Resource Team, Antioch is working to keep the air clean in Contra Costa County with the following efforts.

Transit and Trails

Transit and Trails is a website (and an iPhone app) designed to help you find, plan, and share an outdoor adventure. The site provides the locations of trailheads near you, and provides directions to the locations by foot, bike, car, or public transport.

In May 2012, the Contra Costa Resource Team partnered with the Transit and Trails website to train local community groups in using the online tool to plan trips to the great outdoors using transit. Funds are still available to provide local groups with transit passes for their trip using Transit & Trails. To submit a request for your group, email

Idle Free Pledge

Pledging to be Idle Free is one way every resident of Antioch can make the community a healthier place to live. When cars are left running when they aren’t being driven, engine parts wear out faster, fuel is wasted, and the air is polluted. Turning the key saves money, extends the life of vehicles, and makes it easier for everyone to breathe.  

On Tuesday, March 13, 2018, the City Council passed an Idle Free Proclamation - taking action to improve local air quality and becoming one of the first cities in Contra Costa County to pass a Proclamation to encourage city employees and the public to limit vehicle idling.

An idling car wastes money and produces harmful carbon dioxide, the leading greenhouse gas. Make sure to be able to recognize the facts from the myths on this issue. The "Turn the Key Be Idle Free" campaign is an effort between the Spare the Air Resource Team, its partner organizations, and schools to educate parents about vehicle idling. Join the campaign today by taking the pledge to be idle free at!

If your schools would like to become involved and/or you would like to schedule a presentation for your PTA or other school group, please contact

California Youth Energy Services

The California Youth Energy Services (CYES) is back in Antioch for a 6th summer! This program provides free energy and water efficiency services to the community and provides paid work experience to local youth. To schedule a Green House Call for your home, visit

Energy Star Portfolio Manager

The Energy Star Portfolio Manager is a FREE, helpful tool businesses can use to track their water and energy consumption of all your buildings in a secure online environment. With the assistance of QuEST, the City of Antioch has benchmarked city facilities in Portfolio Manager and is tracking energy usuage per building to see if the changes in lighting usage and facility improvements have resulted in energy savings.